The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2007
Filed:
Dec. 29, 2003
Osamu Kawachi, Kanagawa, JP;
Takuya Abe, Kanagawa, JP;
Yasufumi Kaneda, Kanagawa, JP;
Motoyuki Tajima, Kanagawa, JP;
Osamu Kawachi, Kanagawa, JP;
Takuya Abe, Kanagawa, JP;
Yasufumi Kaneda, Kanagawa, JP;
Motoyuki Tajima, Kanagawa, JP;
Fujitsu Media Devices Limited, Kanagawa, JP;
Abstract
A surface acoustic wave device for implementing an attenuation characteristic outside of the pass band and the narrow band characteristics, preferably for use as a filter. The surface acoustic wave device includes a piezoelectric substrate, interdigital transducers formed on the piezoelectric substrate, and first and second reflectors disposed on the sides of the interdigital transducers. Each of the first and second reflectors includes an open electrode block with a plurality of electrically independent electrode fingers, and a short electrode block with a plurality of electrode fingers of which both ends are electrically shorted.